Azure Cosmos DB databases can be used as the data store for apps written for MongoDB. This functionality means that by using existing drivers, your application written for MongoDB can now communicate with Azure Cosmos DB and use Azure Cosmos DB databases instead of MongoDB databases. In many cases, you can switch from using MongoDB to Azure Cosmos DB by simply changing a connection string. Using this functionality, you can easily build and run MongoDB globally distributed database applications in the Azure cloud with Azure Cosmos DB and its comprehensive industry-leading SLAs while continuing to use familiar skills and tools for MongoDB.

Azure Database Migration Service makes moving MongoDB to Azure Cosmos DB MongoDB API a reliable, seamless and frictionless experience. It's as easy as selecting a source and target and letting the service do the heavy lifting of migration.